After updating to version 3.0.2 virtuemart there are errors in the custom fields. I read a forum here and saw that the solution is to upgrade to version 3.0.3. In the settings fields error disappeared, but remained in goods, in the "Custom Fields". The error is as follows:
Warning: in_array() expects parameter 2 to be array, null given in /home/dneprf/public_html/sotovik95/plugins/vmcustom/param/param.php on line 448
http://sotovik95.website-service.ru/
it is not an error - it is a warning